Mechanism for grinding flats in carding-engines.



No. 703,645. Patented July I, I902 J. FOSSEL.

MECHANISM FOR GRINDING FLATS IN GARDING ENGINES.

' (Application filed Nov. 6, 1899.) (No ModeI.) 2 Shasta-Shoat I.

Invenior:

Joseph Fo gd,

m: uomus PETERS covv PHuYn-LITHQ. wAsumcTom u. c.

no. 703,645. Patented July I, I902.

I J. FOSSEL. I

IIECHANISMFOR GRINDING FLATS IN GARDING ENGINES.

(Application filed Nov. 6, 1899.)

(No Model.) 2 Sheets-Sheet 2'.

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THE Mourns PETERS co. PHOTOiITHO WASHINGTON u. c.

UNITED STATES PATENT OFFICE,

JOSEPH FOSSEL, OF BOSTON, MASSACHUSETTS.

MECHANISM FOR GRINDING FLATS IN CARDING ENGINES.

SPECIFICATION formingpart of Letters Patent No. 703,645, dated July 1, 1902.

' Application filed November 6, 1899. Serial No. 735,950. No model-l To all whom it may ooncerm Be it known that I, JOSEPH FossEL, a citizen of the United States, and a resident of Boston, in the county of Suffolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Mechanism for Grinding Flats in Carding-Engines, of which the following is a specification, reference being had to the accompanying drawings, forming apart of the same, in which Figure 1 is a side elevation of a revolving flat-grinding mechanism embodying my invention. Fig. 2 is a front elevation of the same shown in sectional-view on line A A, Fig. 1. Fig. 3 shows the top view of the ends of two adjacent flats and aspring-actuated bolt arranged to periodically engage the flats,

whereby the movements of the flats beneath the grinding-roll are made to carry the grinding-roll toward the wire face of the flat during the operation of grinding; and Fig. 4 shows the inner side of one of the tracks 5, over which the flats are moved beneath the grinding-roll and the inner side of one of the flanged guidebars 10.

Similar letters refer to similar parts different views.

The object of my invention is to provide a grinding mechanism for the revolvingflats of carding-engines by which the flats will be ground accurately and uniformly, and, furin the ther, to render the construction of the grinding mechanism simple and obviate the liability of inaccurate grinding due to the wear or lost motion of the operating parts; and I accomplish these objects by means of the mechanism hereinafter described, and shown in the accompanying drawings.

Referring to the drawings, the'broken lines 1 denote a portion of the side framework of a. carding-engine, to which stands 2 2 are attached on the opposite sides of the machine to support the grinding mechanism. Each of the stands 2 is bifurcated atits upper end, forming arms or prongs 3 and 4.. Bolted to arms 3 and 4 upon each'side of the machine are bars 5, which form a track over which the flats 6 are moved in the direction of the arrow 7 beneath a revolving grinding-roll 8, causing thewire face 9 of each of the flats to be presented to the action of the grinding-roll as they pass beneath it. Attached to thearms 3 and 4 on each side ofthe machine and above the bars 5 are guide-bars 10, having flanges 11 on their inner side. The flats 6 in the operation of carding are supported at each end upon the surfaces 12, which forms the working seat of the flat, and as the flats pass beneath the grinding-roll their working seats 12 are held in contact with the flanges 11, which correspond in curvature to the bends or sides of the carding-engine, upon which the flats rest in the operation of carding in the usual and well-known manner in machines of this class. As each flat is brought beneath the grinding-rollits rib 13 is brought into confact with the arms 14 and 15, which are carried vupon a rocking shaft 16, held in the stand 2.

To the ends of the rocking-shaft 16 are attached levers 17 ,carrying weights 18, by which the shaft 16 is rocked to lift the arms 14 and 15 and carry the fiat supported thereon upward in order to hold its working seats 12 in contact with the flanges 11.

Attached to a shaft 19, journaled in the upper ends of. the arms 3 3, are levers 20, to which are adjustably attached boxes 21 21 for the shaft 22 of the revolving grinding-roll 8. Each of the boxes 21 is attached to the lovers 20 by means of bolts 23, which pass through slots 24; to allow for the vertical adjustment of each of the boxes by means of a bolt 25, held in a screw-threaded lug 26, proje'cting from the side of the lever 20, with the opposite ends of the bolt bearing against lugs 27 and 28,project-in g from the side of the boxes.

The free ends 29 of the levers 20 rest upon arms 30, carried by a rocking shaft 31, which is journaled in the upper ends of the arms A 4: of the stands 2. Attached to one end of the rocking shaft 31 is a lever 32, having its free end 33 bearing against a stud 34., carried by a bell-crank lever, which is pivoted on a stud 35, held in one of the stands 2 and provided with arms 36 and 37. The arm 36 carries a Weight 38, by which the bell-crank is rocked in one direction and its rocking movement is limited by an adjusting-screw 39, held in a lug 40, which projects from the bellcrank lever and is arranged to strike against a bracket or stop4l, projecting from the side of stand 2. The arm 37 carries in its free end a sliding bolt 42, having its inner end arranged to pass through an opening 43 in one of the guide-bars and enter a space 44 between two adjacent flats, as shown in Fig. 3, and be held in engagement with the flats by means of a spring 45, which presses against the outer end of the bolt, so that as the flats move in the direction of the arrow 7 the arm 37 will be carried by the moving flats, causing the bell-crank lever to be rocked on its pivotal stud and carry the stud 34, against which the free end of the lever 32 rests, thereby allowing the shaft 31 to rock and depress the arms 30, which will lower the ends 29 of the levers 20, so that the grinding-roll 8 will be carried slightly toward the wire face of the flat which is at the time being ground. The sliding bolt 42 is provided with a beveled surface 46, which as the flats are moved in the direction of the arrow 7 is carried against the beveled surface 47 on the guide-bar 10, which causes the bolt 42 to be pushed out against the tension of the spring and disengaged from the flats, when the weight 38 will reverse the motion of the bell-crank lever and carry the sliding bolt 42 into position to enter the space between two adjacent flats which are approaching the grinding-roll at the moment when the roll is beginning to grind one edge of the wire face of a flat. As the grinding operation proceeds across the wire face of the flat the movement of the flat above the track 5 will rock the bell-crank lever and cause the grinding-roll to be slightly lowered, thereby producing a beveled or inclined surface upon the wire face of the flat. A shoulder 48 is formed on the sliding bolt 42, and between the shoulder 48 and the free end of the arm 37 is placed a spiral spring 49, which is weaker than the spring 45. The

free end of the spring 45 rests in a notch in the outer end of the sliding bolt, from which it may be removed, causing the spring 49 to hold the sliding bolt 42 permanently out of engagement with the series of moving flats when it is desired to discontinue the grinding operation.

During the operation of grinding each flat in the series is moved beneath the grindingroll 8 in the direction of the arrow 7 by mechanism not shown in the drawings, but such as is well known and in common use in grinding mechanisms of this class, and as the series of flats are moved beneath the grindingroll they pass over a track 5 and beneath the flanges ll of the guide-bar 10, against which each flat as it is being ground is held against the flange 11 by means of the weights 18, lever 17, rocking shaft 16, and arms 14 and 15, which press against the under side of the ribs 13. Each of the tracks 5 consists of a bent bar attached to the arms 3 and 4 of the stands 2, having its opposite ends turned downwardly, and adjacent to its downturned ends are the horizontal surfaces 51 51, over which the flats pass as they approach and leave the flanges 11 of the guide-bars 10. Between the horizontal surfaces 51 51 the tracks 5 have a depressed section 52, and the under surfaces of the flanges 11 are correspondingly depressed, so that the movement of the flats across the tracks 5 will cause them to be brought in close contact with the flanges 11 independently of the upward pressure exerted by the weights 18, as the strain exerted upon the series of flats tends to draw them in a straight line between the horizontal surfaces 51 51 while the depressed section of the tracks and the under surface of the flanges 11 form a cam-shaped groove arranged to slightly deflect the line of flats downwardly.

The operation of my grinding mechanism is as follows: The series of flats to be ground are given a slow traversing movement over the tracks 5 and beneath the grinding-roll by means of the usual and well-known mechanism'employed in machines of this class for moving flats beneath the grinding-roll and not shown in the drawings. As each flat in the series passes directly beneath the grinding-roll and between the horizontal sections 51 of the track 5 it enters a cam shaped groove between the depressed section of the track and the flanges 11 of the guide-bars 10, by which each flat as it passes beneath the grinding-roll is deflected downward and its rib 13 is brought into contact with the upper surface of the arms 14 and 15, by which it is pressed upwardly to hold its working seats 12 in close contact with the under side of the flanges 11. As the advancing edge of the wire face 9 approaches the grinding-roll the end of the sliding bolt 42 is moved into the space 44 between two adjacent flats, so that the continued upward movement of the flat serves to swing the arms 36 and 37 of the bellcrank lever, thereby leaving the weight 38 and carrying the stud 34 in the direction the flats are moving, thereby allowing the shaft 31 to rock in its bearings and lower the ends 29 of the levers 20, on which the grinding-roll is supported, so that as the wire face 9 is passin g in contact with the grinding-roll the grinding-roll is moved slightly downward, causing the wire face of the flat to be ground on a slightineline or bevel. When the flatis passed beneath the grinding-roll, the bevel surface 46 of the bolt 42 by its contact with the bevel surface 47 on one of the guide-bars 10, Fig. 3, is pushed back out of engagement with the flats, when the weight 38 reverses the motion of the bell -crank, bringing the adjustingscrew 39 against the track 41 and carrying the sliding bolt 42 into position to again engage the flats as the next succeeding flat is brought into contact with the grinding-roll.

tVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In a mechanism for grinding flats in carding-engines, a grinding-roll, fixed guidebars, tracks having central, depressed sections opposite said guide-bars and horizontal supporting-sections beyond the ends of said guide-bars, projecting flanges on said guidebars arranged to bear against the working seats of the flats, said flan gesbein g depressed IIO corresponding to said central depressed sections of the tracks, whereby the flats, as they are drawn from one of said horizontal supporting-sections to the other of said horizontal supporting-sections, are slightly deflected and brought into close contact with said flanges, substantially as described.

2. In mechanism for grinding flats in carding-engines, a track over which the flats to be ground are moved, a guide-bar by which the position of a flat is controlled during the operation of grinding, a swinging bell-crank, a sliding bolt carried by said bell-crank and arranged to engage the flats as they are moved beneath the grinding-roll, whereby said bellcrank lever is rocked, a stud carried by said bell-crank lever, a pair of pivoted levers, a grinding-roll supported by said pivoted 1evers, a rocking shaft, arms carried by said shaft and supporting the free ends of saidpivoted levers, a lever carried by said rocking shaft and having its free end bearing on said stud, whereby the working of said bellcrank will carry the grinding-roll toward the flat, and means for reversing said bell-crank during the operation of grinding, substantially as described.

3. In mechanism for grinding flats in card lug-engines, the combinationofa grindingroll and means for controlling the position of the flats during the operation of grinding, consisting of a bent track and a flange guidebar, said bent track having a depressed secranged to engage the flats as they are moved beneath the grinding-roll and having a bevel surface 46, a fixed bevel surface 47 arranged in'the path of the bevel surface of the bolt 42, whereby said bolt is pushed out of engagement with the flats, a stud carried by said bell-crank, a rocking shaft having alever bearing against said stud and having a pair of arms 30, a pair of levers pivoted at one end to the framework and having their free ends resting on said arms 30, a journal-bearing for said grinding-roll supported on said pivoted levers, substantially as described.

In testimony whereof I have signed my name to this specification, in presence of two subscribing witnesses, this the 4th day of November, 1899.

, JOSEPH FOSSEL. Witnesses:

RUFUS B. FOWLER, AVA T. MURPHY. 

